Asphalt shingles are one of the most popular roofing materials available and with good reason. Shingles are durable, reasonably priced, and a good roofer can quickly put them on a roof. However, if you have asphalt shingles that have been on your roof for more than about twenty years, it is probably time to replace them.
Roof Removal and Inspection
When you are ready to have the roof on your home replaced, it's time to hire a roofing company. The old roofing needs to come off the roof before any new shingles are installed. In the past, some roofers would do a roof-over that involved putting new shingles over the old ones, but reputable roofers have since stopped that practice because it was found to cause problems and the cost savings were not worth it.
The roofer and their crew will remove the old shingles and tar paper down the wood sheathing on the house. The sheathing can then be inspected for damage and replaced if needed before the new roofing material is installed on the roof. The roofer will look the entire roof over for any signs of leaks or rot while the material is off and then decide if any repairs are required.
New Roof Installation
Once the roof is inspected, the roofing company will lay down a layer of felt paper over the entire roof. This paper acts as a vapor barrier to help protect the sheathing or plywood on the roof of the home. Once the paper is laid out on the entire roof, the roofer can place the shingles on the roof.
The roofer will start at the bottom edge of the roof and install a piece of aluminum flashing the support the shingle where it hangs over the roof edge. The shingles are placed in a layout that overlaps the seams to help reduce the possibility of water getting under the shingles when it rains.
Each single is nailed to the roof in four spots that ensure the shingles will stay in place through wind and rain. If you live in an area that often has hurricanes or extreme thunderstorms, the shingle will get two additional nails. When positioned right, the extra nails will nearly double the holding strength and keep the shingles in place in winds up to one hundred miles per hour.
The roofer will also add a car along the top of the roof made from the same shingles on the roof. Once the job is complete, the roof should last twenty to thirty years, depending on the shingles used and the method used to install them. To learn more or to begin the process, contact companies like Robert Gerard Contracting Inc.